117 lines
2.9 KiB
NASM
117 lines
2.9 KiB
NASM
; messagebox routines
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; create a messagebox at the specified coordinates
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; the calling task will not regain control until the user clicks the OK button
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; inputs:
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; r0: pointer to null-terminated first line string
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; r1: pointer to null-terminated second line string
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; r2: pointer to null-terminated third line string
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; r3: X coordinate
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; r4: Y coordinate
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; r5: width in pixels
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; outputs:
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; none
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new_messagebox:
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push r0
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push r1
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push r2
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push r3
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push r4
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push r5
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push r2
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push r1
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push r0
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; save the currently active window offset
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mov.8 [messagebox_old_active_window_offset], [active_window_offset]
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; create the window
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mov r0, messagebox_window_struct
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mov r1, messagebox_window_title
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mov r2, r5
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mov r5, r4
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mov r4, r3
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mov r3, 72
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mov r6, 0
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mov r7, messagebox_ok_button_widget
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call new_window
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; fill the window with white and don't redraw the titlebar
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mov r0, messagebox_window_struct
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call get_window_overlay_number
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mov r1, r0
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mov r0, 0xFFFFFFFF
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call fill_overlay
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; draw the button widget
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mov r0, messagebox_window_struct
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call draw_widgets_to_window
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; draw the strings
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mov r0, messagebox_window_struct
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call get_window_overlay_number
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mov r5, r0
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pop r0
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mov r1, 8
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mov r2, 8
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mov r3, 0xFF000000
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mov r4, 0xFFFFFFFF
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call draw_str_to_overlay
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pop r0
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mov r1, 8
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add r2, 16
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call draw_str_to_overlay
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pop r0
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mov r1, 8
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add r2, 16
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call draw_str_to_overlay
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messagebox_event_loop:
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mov r0, messagebox_window_struct
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call get_next_window_event
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; was the mouse clicked?
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cmp r0, EVENT_TYPE_MOUSE_CLICK
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ifz mov r0, messagebox_window_struct
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ifz push messagebox_event_loop
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ifz jmp handle_widget_click
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; did the user click a button?
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cmp r0, EVENT_TYPE_BUTTON_CLICK
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ifz jmp messagebox_ok_clicked
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call save_state_and_yield_task
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jmp messagebox_event_loop
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messagebox_ok_clicked:
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mov r0, messagebox_window_struct
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call destroy_window
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; restore the old active window offset
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mov.8 [active_window_offset], [messagebox_old_active_window_offset]
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pop r5
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pop r4
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pop r3
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pop r2
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pop r1
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pop r0
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ret
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messagebox_window_title: data.strz "Messagebox"
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messagebox_window_struct: data.fill 0, 36
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messagebox_ok_button_widget:
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data.32 0 ; next_ptr
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data.32 0 ; id
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data.32 WIDGET_TYPE_BUTTON ; type
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data.32 messagebox_ok_button_str ; text_ptr
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data.32 0xFFFFFFFF ; foreground_color
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data.32 0xFF000000 ; background_color
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data.16 32 ; width
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data.16 0 ; reserved
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data.16 8 ; x_pos
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data.16 64 ; y_pos
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messagebox_ok_button_str: data.strz "OK"
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messagebox_old_active_window_offset: data.8 0
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